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Transverse Kerker Effect for Dipole Sources.

Feifei Qin1, Zhanyuan Zhang1, Kanpei Zheng1

  • 1Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou 510632, China.

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Researchers demonstrate a new transverse Kerker effect for localized light emitters. This controls the direction of light emission from quantum dots and other sources, crucial for quantum optics and information processing.

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Area of Science:

  • Nanophotonics
  • Quantum Optics
  • Electromagnetism

Background:

  • The transverse Kerker effect describes directional scattering of plane waves, suppressing forward/backward scattering.
  • Localized electromagnetic emitters are crucial in nanophotonics, with applications in quantum optics and quantum information processing.

Purpose of the Study:

  • Introduce and investigate the transverse Kerker effect for localized dipole sources using subwavelength dielectric antennas.
  • Manipulate the emission direction of localized emitters like quantum dots for on-chip applications.

Main Methods:

  • Utilized subwavelength dielectric antennas to control radiation from magnetic, electric, and chiral dipole emitters.
  • Derived analytical conditions for achieving the transverse Kerker effect.
  • Validated the concept through microwave experiments for magnetic dipole emitters.

Main Results:

  • Demonstrated dominant redirection of radiative power along dipole moments for various emitters.
  • Achieved near-complete suppression of radiation perpendicular to dipole moments.
  • Observed Purcell enhancement mediated by multipolar resonances in the dielectric antenna.

Conclusions:

  • The study introduces a novel method to control localized electromagnetic source emission properties.
  • This work provides new physical mechanisms for on-chip quantum optics and quantum information processing.
  • The findings facilitate advanced manipulation of light emission from quantum emitters.